MEASUREMENT OF ELLIPTICAL POLARIZATION OF INTENSIVE LASER RADIATION BY MEANS OF NONLINEAR THIN-WIRE BOLOMETERS

摘要

It is shown that the systematic measurement errors of the parameters of elliptical polarization of radiation for three bolometer grids depend on the level of the incident intensity and the nonuniformimity of the distribution across the area of the meter's inlet aperture. In the case of platinum bolometers and the radiation from a CO_2 laser with energy parameters up to 5W/cm the systematic measurement errors of the ellipse's relative semiaxes do not exceed 5/100 and of the angular directions of the semiaxes, ±0.75°.